Greg, the turbo is water and oil cooled.
You probably won't see any gains from cleaning a throttle body that was not dirty to begin with.
In regards to the metal lines, I would have to see a picture to be absolutely sure. If they were close enough to your CV boot to cause you concern you probably did the right thing. Seems there is an oil return line down there, or could be brake fluid lines from the master cylinder. Either way, seems there's a brace that they go under and are mounted up under the car so shouldn't be dangling anyway.
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1998 S70 T5 Emarald Green Metallic (125K), 2004 V70 2.5T Ruby Red (45K), Previous Owner of Black '94 850 Turbo Wagon (Sold at 140K and miss her). My cars have been running so well lately they've got me worried.